Reflector.



REFLECTOR.

APPucAnoN FILI-:u Auc.,1o,1911.

Patented Mar. 26, 1918.

LQESQY.

ATTORNEYS.

mi@ @TAS PAENT EMIL G. JOHANSGN, OF CHICAGO, ILLNOIS.

REFLECTOR.

Application filed August 10, 1917.

To @ZZ whom it may concern:

Be it known that I, EMIL Gr. JOHANSON, a subject of the King of Sweden,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Reflectors, of which thefollowing is a specification.

This invention relates to reflectors for automobile lamps and the like,and its object is to provide a reflector which increases the brilliancyof the light, at the same time diffusing the same so as to eliminateglare.

With the above object in mind, reference is had to the accompanyingdrawing forrning a part of this specification, in which Figure l is aninterior view of the reflector, and Fig. 2 is a longitudinal sectionthereof.

Referring specifically to the drawing, it will be observed that thereflector 5 is of conventional parabolic form, and may be made of vmetalwith the interior silvered. The rim of the reflector is formed with anexternal flange 6 vfor application to the lamp casing, and the center isapertured, as shown at 7, to permit an electric lamp bulb to bescrewedinto the back of the lamp casing.

The side walls of the reflector are pressed with a series ofconcavo-conveX units or cups 8, of circular outline. The cups arearranged in circular rows parallel to the rim of the reflector, and saidrows are grouped in close order, so as to cause the cups to makemarginal contact with one another. As shown, the cups forming one roware staggered with respect to those forming the next row, and similarlyin succeeding rows.

The back portion of the reflector is formed with a center-piece design,pressed in the same manner as the cups 8 aforedescribed, but composed ofelongated units 9 extending outward radially from the central aperture 7of the reflector.

Due to the conical form of the reflector,

Gopiea of this patent may be obtained for Specification of LettersPatent.

Patented Mar. 26, ilwf.

Serial No. 185,499.

the cups 8 gradually decrease in size as they depart from the rim, thediameter of each succeeding' circular row of cups becoming less as theback of the reflector is approached.

lVith the above described reflector in use, it will be evident that eachof the cups 8 and center units 9 will increase the power of thereflector by acting as a reflector of itself. The light emitted by thelamp will therefore be brilliant, but still projected bodily forward dueto the parabolic curvature of the reflector walls. The numerousreflector units S will, however, break up or diffuse the reflected raysmaking up the shaft of light emitted by the lamp, thus eliminating theglare or blinding eect considered objectionable in lamps of the typementioned.

I claim 1. A reflector having its reflecting surface provided withplurality of separate re iecting units which are circular and concave,and arranged in concentric circles, the units in the circles increasingin diameter radially outward from the center of the reflector.

2. A reflector having its reflecting surface provided with a pluralityof separate concave reflecting units which are circular in contour andarranged in concentric circles, the units in the circles increasing indiame ter radially outward from the center of the reiector.

3. A reflector comprising a parabolic shell having its inner surfaceprovided with a plurality of separate concave reflecting units which arecircular in contour and arranged in concentric circles, the units in thecircles increasing in diameter radially outward from the center of thereflector.

In testimony whereof I ax my signature.

EML G. JOHANSON.

iive cents each, by addressing the Commissioner of Patente,

Washington, D. C.

